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A platform for research: civil engineering, architecture and urbanism
REMOVAL METHOD OF EXISTING PILE
To provide a removal method of an existing pile capable of preventing processes from increasing.SOLUTION: A removal method of an existing pile comprises: an edge cutting step of inserting a cylindrical casing 1 having an inner diameter larger than an outer diameter of an existing pile P into a ground G where the existing pile P is buried while supplying self-hardening stable liquid L around the existing pile P to surround the existing pile P with the casing 1; a pulling-out step of pulling out the existing pile P from the ground G by moving a movable claw 4 provided on a lower end part of the casing 1 to position the movable claw 4 below the lower end part of the existing pile P or to align with the lower end part and then moving the casing 1 upward; and an agitation step of placing the casing 1, from which the existing pile P has been removed, again in a hole H left after the existing pile P has been pulled out, supplying additional self-hardening stable liquid L and moving the casing 1 up and down several times to agitate sediment S in the left hole H and the self-hardening stable liquid.SELECTED DRAWING: Figure 6
【課題】工程の増加を抑制できる既存杭の撤去工法を提供する。【解決手段】既存杭Ｐが埋められている地盤Ｇに、内径が既存杭Ｐの外径よりも大きい筒状のケーシング１を、既存杭Ｐの周囲に自硬性安定液Ｌを供給しながら差し込んでいき、前記既存杭Ｐを前記ケーシング１で包囲する縁切り工程と、前記ケーシング１の下端部に設けられている可動爪４を移動させ、前記可動爪４を前記既存杭Ｐの下端部よりも下方に位置させるか、または、前記下端部に一致させた上で、前記ケーシング１を上方に移動させることで前記既存杭Ｐを地盤Ｇから引き抜く引き抜き工程と、前記既存杭Ｐが引き抜かれた後の残存穴Ｈに、前記既存杭Ｐを取り除いた前記ケーシング１を再度配置させ、追加の自硬性安定液Ｌを供給して、前記ケーシング１を複数回上下動させることで、前記残存穴Ｈ内部の土砂Ｓと前記自硬性安定液Ｌとを撹拌する撹拌工程と、を有する。【選択図】図６
REMOVAL METHOD OF EXISTING PILE
To provide a removal method of an existing pile capable of preventing processes from increasing.SOLUTION: A removal method of an existing pile comprises: an edge cutting step of inserting a cylindrical casing 1 having an inner diameter larger than an outer diameter of an existing pile P into a ground G where the existing pile P is buried while supplying self-hardening stable liquid L around the existing pile P to surround the existing pile P with the casing 1; a pulling-out step of pulling out the existing pile P from the ground G by moving a movable claw 4 provided on a lower end part of the casing 1 to position the movable claw 4 below the lower end part of the existing pile P or to align with the lower end part and then moving the casing 1 upward; and an agitation step of placing the casing 1, from which the existing pile P has been removed, again in a hole H left after the existing pile P has been pulled out, supplying additional self-hardening stable liquid L and moving the casing 1 up and down several times to agitate sediment S in the left hole H and the self-hardening stable liquid.SELECTED DRAWING: Figure 6
【課題】工程の増加を抑制できる既存杭の撤去工法を提供する。【解決手段】既存杭Ｐが埋められている地盤Ｇに、内径が既存杭Ｐの外径よりも大きい筒状のケーシング１を、既存杭Ｐの周囲に自硬性安定液Ｌを供給しながら差し込んでいき、前記既存杭Ｐを前記ケーシング１で包囲する縁切り工程と、前記ケーシング１の下端部に設けられている可動爪４を移動させ、前記可動爪４を前記既存杭Ｐの下端部よりも下方に位置させるか、または、前記下端部に一致させた上で、前記ケーシング１を上方に移動させることで前記既存杭Ｐを地盤Ｇから引き抜く引き抜き工程と、前記既存杭Ｐが引き抜かれた後の残存穴Ｈに、前記既存杭Ｐを取り除いた前記ケーシング１を再度配置させ、追加の自硬性安定液Ｌを供給して、前記ケーシング１を複数回上下動させることで、前記残存穴Ｈ内部の土砂Ｓと前記自硬性安定液Ｌとを撹拌する撹拌工程と、を有する。【選択図】図６
REMOVAL METHOD OF EXISTING PILE
既存杭の撤去工法
YAMASHITA KENICHI (author) / MARUOKA YUKI (author) / OZAKI FUTO (author)
2024-02-26
Patent
Electronic Resource
Japanese
IPC:
E02D
FOUNDATIONS
,
Gründungen
EXISTING PILE REMOVAL DEVICE AND EXISTING PILE REMOVAL METHOD
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EXISTING PILE REMOVAL DEVICE AND EXISTING PILE REMOVAL METHOD
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| European Patent Office | 2022